Patent US3500451A successfully refreshed from Google Patents.
US3500451A
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Piezoelectric voltage generator
Assignee: Verizon Laboratories Inc
•
Filing: 1967-06-29
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Granted: 1970-03-10
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Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen Yando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:46
CPC Classifications
F; F23; F23Q; F23Q3/00; F23Q3/002; G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0452; G03B15/0463; H; H01; H01H; H01H35/00; H02; H02N; H02N2/00; H02N2/18; H02N2/181; H10; H10N; H10N30/00; H10N30/30; H10N30/304; H10N30/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3219850A
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US3098163A
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US3363139A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |